摘要
目的探究鄂尔多斯盆地安塞油田坪桥地区长2储层的内部结构特征及储集物性的主控因素。方法通过岩心分析测试、测井参数解释与生产动态等资料对储层进行分析研究和综合评价。结果长2油层组中泥质、钙质夹层和富含炭屑与碳质薄层较发育。河道中心微相为均质—中等均质储层,河道边缘非均质性稍强;点砂坝与决口扇砂体属于中等非均质储层。结论储层的层内非均质性中等,层间及平面非均质性较强;沉积环境、沉积相和成岩作用等是影响储层非均质性的主要因素。
Aim To study the characteristics and major controlling factors for internal architectures of the Chang 2 Group from Pingqiao area in the An′sai Oil Field,eastern Ordos Basin.Methods Analyses and comprehensive study on the reservoir heterogeneity and reservoir evaluation is based upon various analytic methods and measurements from rock cores,interpretation parameters from well logs and production dynamic data.Results Argillaceous and calcareous dissectiona,carbon debris and carbonaceous laminar layers are developed in the Chang 2.The channel center micro-facies is homogeneous and intermediate heterogeneous,channel margin is of relatively strong heterogeneity.The crevasse and point bars are of intermediate heterogeneity.Conclusion Inlayer macro heterogeneity is intermediate,the interlayer and horizontal macro heterogeneity are relatively strong;primary parameters resulted in reservoir heterogeneity include depositional environment,sedimentary facies,diagenesis.
出处
《西北大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第2期287-292,298,共7页
Journal of Northwest University（Natural Science Edition）
基金
国家科技重大专项基金资助项目(2008ZX05008-004-076)
国家自然科学基金资助项目(40872083)
关键词
储层非均质性
影响因素
长2油层组
安塞油田
reservoir heterogeneity
influence factors on heterogeneity
the Chang 2
Ansai Oilfield
